mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 01:50:11 +00:00
4751bbe2ad
This patch fixes the p{readv,writev}{64} consolidation implementation
from commits 4e77815 and af5fdf5. Different from pread/pwrite
implementation, preadv/pwritev implementation does not require
__ALIGNMENT_ARG because kernel syscall prototypes define
the high and low part of the off_t, if it is the case, directly
(different from pread/pwrite where the architecture ABI for passing
64-bit values must be in consideration for passsing the arguments).
It also adds some basic tests for preadv/pwritev.
Tested on x86_64, i686, and armhf.
* misc/Makefile (tests): Add tst-preadvwritev and tst-preadvwritev64.
* misc/tst-preadvwritev.c: New file.
* misc/tst-preadvwritev64.c: Likewise.
* sysdeps/unix/sysv/linux/preadv.c (preadv): Remove SYSCALL_LL{64}
usage.
* sysdeps/unix/sysv/linux/preadv64.c (preadv64): Likewise.
* sysdeps/unix/sysv/linux/pwritev.c (pwritev): Likewise.
* sysdeps/unix/sysv/linux/pwritev64.c (pwritev64): Likewise.
* sysdeps/unix/sysv/linux/sysdep.h (LO_HI_LONG): New macro.
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/* Tests for preadv and pwritev.
|
|
Copyright (C) 2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sys/uio.h>
|
|
|
|
/* Allow testing of the 64-bit versions as well. */
|
|
#ifndef PREADV
|
|
# define PREADV preadv
|
|
# define PWRITEV pwritev
|
|
#endif
|
|
|
|
static void do_prepare (void);
|
|
static int do_test (void);
|
|
#define PREPARE(argc, argv) do_prepare ()
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|
|
|
|
static char *temp_filename;
|
|
static int temp_fd;
|
|
|
|
void
|
|
do_prepare (void)
|
|
{
|
|
temp_fd = create_temp_file ("tst-PREADVwritev.", &temp_filename);
|
|
if (temp_fd == -1)
|
|
{
|
|
printf ("cannot create temporary file: %m\n");
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
#define FAIL(str) \
|
|
do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
|
|
|
|
int
|
|
do_test (void)
|
|
{
|
|
struct iovec iov[2];
|
|
ssize_t ret;
|
|
|
|
char buf1[32];
|
|
char buf2[64];
|
|
|
|
memset (buf1, 0xf0, sizeof buf1);
|
|
memset (buf2, 0x0f, sizeof buf2);
|
|
|
|
memset (iov, 0, sizeof iov);
|
|
iov[0].iov_base = buf1;
|
|
iov[0].iov_len = sizeof buf1;
|
|
iov[1].iov_base = buf2;
|
|
iov[1].iov_len = sizeof buf2;
|
|
|
|
ret = PWRITEV (temp_fd, iov, 2, 0);
|
|
if (ret == -1)
|
|
FAIL ("first PWRITEV returned -1");
|
|
if (ret != (sizeof buf1 + sizeof buf2))
|
|
FAIL ("first PWRITEV returned an unexpected value");
|
|
|
|
ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2);
|
|
if (ret == -1)
|
|
FAIL ("second PWRITEV returned -1");
|
|
if (ret != (sizeof buf1 + sizeof buf2))
|
|
FAIL ("second PWRITEV returned an unexpected value");
|
|
|
|
char buf3[32];
|
|
char buf4[64];
|
|
|
|
memset (buf3, 0x0f, sizeof buf3);
|
|
memset (buf4, 0xf0, sizeof buf4);
|
|
|
|
iov[0].iov_base = buf3;
|
|
iov[0].iov_len = sizeof buf3;
|
|
iov[1].iov_base = buf4;
|
|
iov[1].iov_len = sizeof buf4;
|
|
|
|
ret = PREADV (temp_fd, iov, 2, 0);
|
|
if (ret == -1)
|
|
FAIL ("first PREADV returned -1");
|
|
if (ret != (sizeof buf3 + sizeof buf4))
|
|
FAIL ("first PREADV returned an unexpected value");
|
|
|
|
if (memcmp (buf1, buf3, sizeof buf1) != 0)
|
|
FAIL ("first buffer from first PREADV different than expected");
|
|
if (memcmp (buf2, buf4, sizeof buf2) != 0)
|
|
FAIL ("second buffer from first PREADV different than expected");
|
|
|
|
ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4);
|
|
if (ret == -1)
|
|
FAIL ("second PREADV returned -1");
|
|
if (ret != (sizeof buf3 + sizeof buf4))
|
|
FAIL ("second PREADV returned an unexpected value");
|
|
|
|
if (memcmp (buf1, buf3, sizeof buf1) != 0)
|
|
FAIL ("first buffer from second PREADV different than expected");
|
|
if (memcmp (buf2, buf4, sizeof buf2) != 0)
|
|
FAIL ("second buffer from second PREADV different than expected");
|
|
|
|
return 0;
|
|
}
|